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5 years agoAArch64: Fix cfinv disassembly issues
Tamar Christina [Mon, 27 Jan 2020 10:40:02 +0000 (10:40 +0000)] 
AArch64: Fix cfinv disassembly issues

This fixes the preferred disassembly for cfinv.  The Armv8.4-a instruction
overlaps with the possible encoding space for msr.  This because msr allows you
to use unallocated encoding space using the general sA_B_cC_cD_E form.

However when an encoding does become allocated then we need to ensure that it's
used as the preferred disassembly.  The problem with cfinv is that its mask has
all bits sets because it has no arguments.

This causes issues for the Alias resolver in gas as it uses the mask to build
alias graph.  In this case it can't do it since it thinks almost everything
would alias with cfinv.  So instead we can only fix this by moving cfinv before
msr.

gas/ChangeLog:

PR 25403
* testsuite/gas/aarch64/armv8_4-a.d: Add cfinv.
* testsuite/gas/aarch64/armv8_4-a.s: Likewise.

opcodes/ChangeLog:

PR 25403
* aarch64-tbl.h (struct aarch64_opcode): Re-order cfinv.
* aarch64-asm-2.c: Regenerate
* aarch64-dis-2.c: Likewise.
* aarch64-opc-2.c: Likewise.

(cherry picked from commit 7568c93bf95a518797dfb2987b04911164c14a36)

5 years agoThis is a series of backports for binutils 2.33 which addresses some of the new conte...
Mihail Ionescu [Mon, 20 Jan 2020 14:10:26 +0000 (14:10 +0000)] 
This is a series of backports for binutils 2.33 which addresses some of the new context sensitive extension mechanism. This is done in order to get gcc MVE code to work with binutils 2.33.

Mihail Ionescu(5)
[backport][binutils][arm][1/5] Enable context sensitive .arch_extension
[backport][binutils][arm][2/5] Make .fpu reset the FPU/Coprocessor feature bits
[backport][binutils][arm][3/5] Change CRC from fpu feature to archititectural extension
[backport][binutils][arm][4/5] Set context table for '.arch_extension'
[backport][binutils][arm][5/5] PR25376 Change MVE into a CORE_HIGH feature

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5 years agold-arm/tls-gdesc-neg test
Alan Modra [Mon, 7 Oct 2019 02:44:11 +0000 (13:14 +1030)] 
ld-arm/tls-gdesc-neg test

Fixes a failure on armeb-linuxeabi.

Backport from master.
2019-10-07  Alan Modra  <amodra@gmail.com>

* testsuite/ld-arm/tls-gdesc-neg.d: Relax target match.

5 years agoAutomatic date update in version.in
GDB Administrator [Fri, 17 Jan 2020 00:02:00 +0000 (00:02 +0000)] 
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5 years agoAArch64: Revert SEC_LINKER_CREATED for AArch64 stubs (PR/25210)
Tamar Christina [Thu, 2 Jan 2020 14:06:01 +0000 (14:06 +0000)] 
AArch64: Revert SEC_LINKER_CREATED for AArch64 stubs (PR/25210)

The SEC_LINKER_CREATED flag was added as a fix for PR 24753.  I believe that
part of the fix in compress.c to still be correct as linker created sections
don't have a size on disk and it fixes the Arm bootstrap regression.

So I'm partially revert this change so that we don't have to manage the section
manually as implied by SEC_LINKER_CREATED as it's causing an error when both
errata workarounds are used together and it wasn't needed.  This can also be
seen from that the arm bootstrap was fixed and no flag was added to it's stubs.

ld/ChangeLog:

PR 25210
PR 24753
* emultempl/aarch64elf.em (elf${ELFSIZE}_aarch64_add_stub_section):
Remove SEC_LINKER_CREATED.
* testsuite/ld-aarch64/aarch64-elf.exp: Add erratum835769-843419.
* testsuite/ld-aarch64/erratum835769-843419.d: New test.

(cherry picked from commit 0db131fb835e4c4f6a024e86743467e7e01c965e)

Signed-off-by: Tamar Christina <tamar.christina@arm.com>
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5 years agoReinstate gas em=freebsd for sparc-freebsd
Alan Modra [Wed, 15 Jan 2020 05:45:43 +0000 (16:15 +1030)] 
Reinstate gas em=freebsd for sparc-freebsd

In commit c9098af41e3 I over-simplified the sparc target decoding,
missing the fact that prior to that patch sparc-*-freebsd fell through
to the generic *-*-freebsd match.

* configure.tgt: Add sparc-*-freebsd case.

(cherry picked from commit c24d0e8d4850d4913a1630a53e272c930849406d)

5 years agoPR25384, PowerPC64 ELFv1 copy relocs against function symbols
Alan Modra [Tue, 14 Jan 2020 10:15:53 +0000 (20:45 +1030)] 
PR25384, PowerPC64 ELFv1 copy relocs against function symbols

Function symbols of course don't normally want .dynbss copies but
with some old versions of gcc they are needed to copy the function
descriptor.  This patch restricts the cases where they are useful to
compilers using dot-symbols, and enables the warning regardless of
whether a PLT entry is emitted in the executable.  PLTs in shared
libraries are affected by a .dynbss copy in the executable.

bfd/
PR 25384
* elf64-ppc.c (ELIMINATE_COPY_RELOCS): Update comment.
(ppc64_elf_adjust_dynamic_symbol): Don't allow .dynbss copies
of function symbols unless dot symbols are present.  Do warn
whenever one is created, regardles of whether a PLT entry is
also emitted for the function symbol.
ld/
* testsuite/ld-powerpc/ambiguousv1b.d: Adjust expected output.
* testsuite/ld-powerpc/funref.s: Align func_tab.
* testsuite/ld-powerpc/funref2.s: Likewise.
* testsuite/ld-powerpc/funv1.s: Add dot symbols.

(cherry picked from commit e1c6cf618cbeebbafd34afc5ee921fcbf7061bfa)

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5 years ago[PR ld/22269] arm: Avoid dynamic relocs for undefweak symbols in static PIE
Szabolcs Nagy [Thu, 9 Jan 2020 17:20:56 +0000 (17:20 +0000)] 
[PR ld/22269] arm: Avoid dynamic relocs for undefweak symbols in static PIE

With static PIE linking undefined weak symbols are resolved to 0, so no
dynamic relocation is needed for them. The UNDEFWEAK_NO_DYNAMIC_RELOC
macro was introduced so this case can be handled easily, but it was not
applied consistently in the first attempt to fix ld/22269 for arm:

  commit 95b03e4ad68e7a90f5096b47df595636344b783a
  arm: Check UNDEFWEAK_NO_DYNAMIC_RELOC

This patch fixes spurious relative relocs in static PIE binaries against
GOT entries created for undefined weak symbols on arm*-*, this fixes

FAIL: pr22269-1 (static pie undefined weak)

bfd/ChangeLog:

Backported from master
2020-01-10  Szabolcs Nagy  <szabolcs.nagy@arm.com>

PR ld/22269
* elf32-arm.c (elf32_arm_final_link_relocate): Use
UNDEFWEAK_NO_DYNAMIC_RELOC.
(allocate_dynrelocs_for_symbol): Likewise.

5 years ago[ARM][gas] fix build breakage with gcc-10 by using correct enum type
Szabolcs Nagy [Mon, 21 Oct 2019 15:59:11 +0000 (16:59 +0100)] 
[ARM][gas] fix build breakage with gcc-10 by using correct enum type

Fixes

../../gas/config/tc-arm.c: In function 'parse_reg_list':
../../gas/config/tc-arm.c:1946:35: error: implicit conversion from 'enum reg_list_els' to 'enum arm_reg_type' [-Werror=enum-conversion]
 1946 |        reg = arm_reg_parse (&str, REGLIST_RN);
      |                                   ^~~~~~~~~~

gas/ChangeLog:

Backported from mainline.
2020-01-02  Szabolcs Nagy  <szabolcs.nagy@arm.com>

* config/tc-arm.c (parse_reg_list): Use REG_TYPE_RN instead of
REGLIST_RN.

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5 years ago[gas] Implement .cfi_negate_ra_state directive
Kyrylo Tkachov [Fri, 6 Dec 2019 12:00:17 +0000 (12:00 +0000)] 
[gas] Implement .cfi_negate_ra_state directive

2019-12-06  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

Backported from mainline.
2019-12-06  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

* dw2gencfi.c (cfi_pseudo_table): Add cfi_negate_ra_state.
* testsuite/gas/aarch64/pac_negate_ra_state.s: New file.
* testsuite/gas/aarch64/pac_negate_ra_state.d: Likewise.

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